I think I have a similar problem. We have 4000 strong database that was working smoothly. Bibliography built successfully and even CWYW worked. However now some of our temporary citations are not detected. I can “insert citation” from a single database in a brand new database, “build bibliography” and the citation is not recognized. In some cases, a different citation will work fine in the same document, from the same database. We are inserting citations in the form “{Mueller, 2003 4100 /id}” and when we build the bibliogrpahy RM12 says it can’t find “Mueller, 2003 4100 /id”. The work around is to go through by hand and re-find the citations for it…but thats not an ideal solution!